I say - CELEBRATE!
Michael had his esophagectomy in September. Thanksgiving that year? Oh yeah! To be with all his family gathered together at the table after going through something like that? How wonderful! A celebration. Did he eat? Too much! Didn't want to try turkey but sucked down chicken and dumplings, potatoes...... pumpkin pie.
You make sure there's stuff he can eat - that's all. Is he self-conscious? There's nothing gross or anything about eating less food than everybody else or eating slower. (We would all do better if we did that!) Surely your family and friends will be in tune with this by then.
We ate out quite a bit. A lot of Mexican as it suited him. Usually had a fish entree at a fancier restaurant. Clue in the server that he might need to go a la carte - get the soup as his entree, etc. Never had any problem. They were all great, helpful.
Of course, a lot depends on his attitude. You'll just have to see. Michael wanted holidays as always, did not want them to focus on his cancer. He was planning a Christmas party when he passed, wanted people over. One heck of a menu for his friends - things he wouldn't be able to eat but he wanted to do it for them. He was a foodie - a great cook.
Can't tell from your post - Is your husband distraught about limitations on what he can eat? Seeing others enjoying what he can't? Seems some are. I know it was a bummer for Mike to not be able to eat some things but that's just the way it was. But - he could eat - just different. So he couldn't have a ribeye anymore - he was alive. Thank You, Lord! And out and about whenever he could, being with friends and family celebrating life. That's what was important to him.
When he got tired we went home.
Mostly, - yes, it is too early to think about it. The holidays are 6 months away. There will be so much improvement by then! I vote for keeping it in your head to celebrate as always.
Merry Christmas! Cray